Extensible rod



L. MITCHELL. I 1,795,325

March 19, 1929.

EXTENS IBLE ROD Filed Sept. 17; 1926 ATTORNEYS Patented Mar. 19, 1929.

WILLIAM L. MITCHELL, F BROOKLYN, NEW YOBK/ ASSIGNOR TO BATTLE GREEKSURGICAL SUPPLY & SUPPORTER CORPORATION, OF

CORPORATION or MICHIGAN.

EXTENSIBLE ROD.

Application filed September 17, 1926. Serial No. 136,049.

This invention relates to improvements in extensible rods, and has forone of its objects to provide a simple and practical constructionwhereina plurality of sections are telescopically arranged and joinedto eachother in such manner that the same may be extended to secure a maximumlength of rod. 7

Another object is to limit the movements of the sections of the rod toextended positions by providing an intermediate section with a tube-likemember having flanges ateach end which contact the abutments carried bythe adjacent sections so as to prevent further outward movement of thesections relative to each other after the same have been fully extended.

The above and other objects will appear more clearly from the followingdetail description, when taken in connection with the accompanyingdrawing, which illustrates a preferred embodiment of the inventive idea.

In the drawing- Figure 1 is a longitudinal section through a rod inextended position and constructed in accordance with the invention;

Figure 2 is a section on the line 22 of Figure 1; and I Figure 8 is asection on the line 3-3 of Figure 1.

Referring more particularly to the accompanymg drawing, the numerals 4,and 6 indicate an intermediate'and two end sections comprising the rod,the section 4; being telescoped within the section 5 while the section 6'is similarlyarranged within the section 4.

The section 4 is provided with a closed end/7 having an opening 8 whichis surrounded by one endof a tubular member .9 arranged centrally withinthe section and extending longitudinally'thereof for practically itsentire length. The disposition of the member 9 with respect to theopening 8 forms on the closed end 7 an annular flange 10 which surroundssaid opening. The opposite end of the member 9 is pro vided with anannular outturned flange 11 for a purpose which will presently appear.

The section 5 is provided with the closed end 12 in which is centrallymounted one BATTLE CREEK, MICHIGAN, A

end of a rod 13 extending longitudinally of the section and having itsouter end project ing through the opening 8 in the section 4.

Said outer end of the. rod is provided with a disk-like head 1% whichforms an abutment movable in the member 9 and adapted to contact theflange 10in order to limit the movement of the sections 4 and 5 to theirextended positions and thereby prevent complete detachment of saidsections.

The section 6, which is movable within the section 4,.surrounds thetubular member 9 and is provided at its inner end with an inturnedflange which is adapted to contact the flange 11 at the outer end-of themember 9 when the section 6 is at the. i

limit of its extended position.

- Thus the invention provides an extensible rod which may be used forvarious purposes and in which the sections thereof may be extended to,secure a maximum length for the rod and which, when in extendedposition, will be properly braced by the adjacent section and preventedfrom becoming accidentally detached therefrom.

What is claimed is: 1. In an extensible rod, an' intermediate sectionhaving a tubular member forming an integral part thereof and extendingfrom one end of the section to a point adjacent. its opposite end inspaced relation to the wall of said section, a second section into whichthe first named section telescopes, a rod in said second sectionprojecting through the first named end 01 said intermediate section andinto said tubular memher, said rod having means engageable with, saidfirst named end to limit out-ward movement of said intermediate sectionrelative to said second section, and a third section movement of saidthird section relative to the intermediate section.

2..In an extensible rod, a plurality of tubular telescoping sections oneof which is provided at one end with an inturned flange having anopening, sa1d SeCtlOIl also opening and extending from said end ofhavlng a tubular member surrounding said 7 i the section toward theopposite end in sections and projecting through said opening and havinga head movable in said tubu lar member for contactwith said inturnedflange to limit the movements of said sections to extended position, anda'third section Within the first named section and havlng an abutment atlts lnn'er end cooperating With the abutment on said opposite end of thetubular member to limit outward movement of said third section.

In testimony whereof I have afiixed my 15 signature. 7

WILLIAM L. MITCHELL

